COMMENT(\s\S+)*\ \#\ Install\ system\ packages\.\ This\ doesn't\ include\ everything\ the\ TensorFlow\ dockerfile\ specifies,\ so\ if\ anything\ goes\ awry,\ maybe\ install\ more\ packages\ from\ there\.\ Also,\ running\ apt\-get\ clean\ before\ further\ commands\ will\ make\ the\ Docker\ im\.\.\.(\s\S+)*